Thrashing machine



J. B. MILTON.

THHASHING MACHINE.

APPucAHoN FILED MAR. 29. 1920.

Patented Apr. 25, 1922.

INVENTOR. JEJYl/ol? ATTORNEY.

UNITED STATES JOSEPH B. MILTON, OF ENID, OKLAHOMA'.

TEBASHING -EACB'IN'E Specification of Letters Patent. Patented I Apr. ,25, 1922.

Application led March 29, 1920.` ASerial 11m-359,712.

thrashing machines, and its object is* t6 provide a novel and improved means for conveying the straw from the thrashing'element to the stacker, saidmeans also serving to beat and agitate the straw in su'ch a manner that the grain is separated from the straw and chaff, and the loss of'grain is reduced to a minimum.

The object stated is attained by means of a'combination and arrangement of parts to be hereinafter described in detail, and in order that the same may be better understood, reference is had to the accompanying drawing forminga part of this specification.

In the drawing a central longitudinal section of the machine is shown.

Referring specifically to the drawing, 10 denotes a thrashing cylinder armed at its lreceiving end with la spiralconveying screw l1 and to the rear thereof with beater arms l2. The screw forces the material rearwardly to the beater arms. Below the cylinder is located a perforated screen 13, and beneath the latter is a grain auger 14 which carries the grain rearwardly to a grain shoe 15 delivering to the grain auger 16 of the.

usual grain elevator.

The cylinder 10 is mounted on a shaft. 17

. the auger 14 is a pulley 21 for driving the same. On the rear end of the shaft 17 is mounted a fan 22 for delivering the straw to the usual stacker,lthe fan being mounted in a casing 23 from which the straw spout `24; leads.

Immediately to the rear of the cylinder 10, the housin 18 contains a transverse partition 25 rismg to the height ofthe cylinder, and spaced at the top from the top of the housing so as to allow the straw to pass from lthrough the screen to the shoe.

the cylinder into the rear portion 26 of the housing. The shaft 17 passes through this portion of the housing, and is here armed/i with radially extending beater arms 27 having near their outer ends spiral twists 28 in such a direction that the straw is forced rearwardly to the fan casing 23 as the arms revolve with the shaft.

Above .the rain shoe 15 and the discharging end of t e auger is a screen 29 Vwhich extends with a downward and rearward slant from a point closeto the topv of the partition to the rear end ofthe grain shoe, above said end of which latter itterminates. The screen 29 is thus located between the beater `arms 27 and the grain shoe l5 and... serves to prevent the straw from getting into the latter, However, the grain whipped out of the straw by the beater arm drops At the' rear end of the shoe is the usual augeror screw 3() -of the tailings elevator.

Behind the partition :25, and extending downward from the top vof the housing 18 isv a straw board to deflect the straw downward to the beater arms 27 as it leaves the cylinder and passes over the top of the partition 25 intothe straw conveying compartment 26.

In operation, the strawin its passage rearwardly after .leaving the. cylinder 10 is Whipped and beaten out by thearms 27, and also forced rearwardly to the fany casing 23. This beating action on the massl of straw separates the grain present inv the'mass, and the grain thus beaten vout drops through the screen 29 tothe shoe 15. The straw is fedl rearwardly in a steady stream and rio-bunching or choking occurs.

I claim: Y, i v, In. a thrashing machine, a housing having thrashing means at one end and a straw contr nsverse partition in the housing back ofthe vth ashing means and spaced from the top of the housing, a grain shoe at the bottom2 of said compartment, a rotahle shaft er-A tendlng lengthwise' through the compart-y ment, radial y extending beater arms carried by the shaft and having spiral twists at their extremltles to force the straw rearwardly through the compartment, and a screen eX- tending with a downward and rearward v slant from the top of the partition to the rear end' of the grain shoe, and having its l rear end .located beneath the beater arms.

In testimony whereof I affix m si ature.

JOSEPH B. lidTIL ON. 

